P2CE2Intake Air Heater C Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2CE2 is the plausibility test for intake air heater C: the circuit is neither open nor shorted, but current draw, voltage drop or heating effect do not fit the command. Under the heavy-duty OBD rules a glow plug or intake air heater must react properly to commands and its circuit must show plausible current and voltage drop. No manufacturer documents P2CE2 publicly. Volvo and Mack, the only makers seen using heater C codes, list for their pre-heat relay issue the Range/Performance codes of heaters A and B (P2604-7F, P2606-7F) together with the open, low and high codes of heater C, but no C plausibility code. Their repair path still fits: terminal tension, EMS software level, then relay and supply cable. Expect sluggish cold starts and white smoke.
- What you may notice
- Longer cranking on cold mornings
- White smoke and rough running until warm
- Warning lamp without an open or short code for heater C
- Likely causes
- LikelyExtra resistance from corroded terminals or a worn supply cable lowering heater current
- PossiblePre-heat relay switching with excessive voltage drop
- PossibleHeating element C aged, drawing current outside the expected window
- RareWeak batteries or poor main ground distorting the current and voltage reading
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.